Mueller Industries B34236 Four-Bolt Check Valve - 1-1/8

The Mueller Industries B34236 is a CHECKMASTER® Four-Bolt check valve featuring a forged brass body designed for professional refrigeration and HVAC applications. This 1-1/8" ODF (Outside Diameter Flare) connection valve provides reliable one-way flow control in refrigerant lines.

Key Features:

• Forged brass body that exceeds stringent industry quality standards
• Designed for easy removal and reassembly of internal components
• Heat-stabilized PTFE seat provides seal across wide temperature ranges
• Non-asbestos gasket material ensures seal integrity
• Design pressure 700 psig (48 bar)
• Continuous operating temperature range: -40°F to 300°F (-40°C to 149°C)
• UL/cUL Recognized, conforms to Pressure Equipment Directive 2014/68/EU

The four-bolt design allows for field serviceability and maintenance access to internal components without removing the valve from the refrigeration system. Material construction is brass with solder connections, providing durability and compatibility with various refrigerants including CFC, HCFC, HFC, and HFO refrigerants and oils.

This check valve prevents reverse flow and back pressure in refrigeration systems, protecting compressors and maintaining system efficiency. Ideal for commercial refrigeration, industrial cooling systems, and HVAC applications requiring 1-1/8" ODF connections.